rotational rock slide


rotational rock slide
   The mass movement process, associated sediments (rotational rock slide deposit), or resultant landform characterized by an extremely slow to moderately rapid type of slide, composed of comparatively dry and largely consolidated rock bodies, portions of which remain largely intact but reoriented, and in which movement occurs along a well-defined, concave shear surface and resulting in a backward rotation of the displaced mass. The landform may be single, successive (repeated up and down slope), or multiple (as the number of slide components increase).
   SW & DV

Glossary of landform and geologic terms. 2013.

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